Index: trunk/MagicSoft/Mars/mraw/MRawRunHeader.h
===================================================================
--- trunk/MagicSoft/Mars/mraw/MRawRunHeader.h	(revision 7991)
+++ trunk/MagicSoft/Mars/mraw/MRawRunHeader.h	(revision 7996)
@@ -116,4 +116,5 @@
     Int_t GetNumTotalBytes() const;
 
+    Bool_t IsValid() const { return fMagicNumber==0xc0c0 || fMagicNumber==0xc0c1; }
     Bool_t IsMonteCarloRun() const { return fRunType>0x00ff; }